‘Transformers 3’ in Chicago

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley runs up the steps toward Michigan Avenue during the filming of a scene for "Transformers 3."

Tribune photo by Alex Garcia

Cars explode in the air during filming of Transformers 3 on East Wacker Drive in downtown Chicago.

Simon Brubaker, Chicago Tribune

Director Michael Bay stands on the Wabash Avenue Bridge during the shooting of Transformers 3 in Chicago.

Alex Garcia, Chicago Tribune

A crew member rides a bicycle past cars littering a service road as "Transformers 3" filming continues next to the railway lines south of the Art Institute in Chicago.

Luis Arroyave, Chicago Tribune

A car on the set of "Transformers 3," filming in downtown Chicago.

Alex Garcia, Chicago Tribune

The Nathan Hale court at the Tribune Tower on North Michigan Avenue in downtown Chicago become part of a battle scene for the filming of "Transformers 3."

E. Jason Wambsgans, Chicago Tribune

Crews create the set for "Transformers 3" on a closed off portion of Michigan Avenue in Chicago.

William DeShazer, Chicago Tribune

A film helicopter circles downtown for the filming for Transformers 3 just north of Michigan Avenue Bridge.

Chuck Berman, Chicago Tribune

Set props are moved on the second day of shooting along LaSalle Street in the Chicago Loop for "Transformers 3."

Alex Garcia, Chicago Tribune

People watch as burning cars litter a service road as "Transformers 3" filming continues next to the railway lines south of the Art Institute in Chicago.

William DeShazer, Chicago Tribune

The Optimus Prime truck is used during the filming of "Transformer 3" on LaSalle Street in the Chicago Loop.

Alex Garcia, Chicago Tribune

Actor Josh Duhamel rides a bicycle through Pioneer Court in downtown Chicago during a break in the filming of "Transformers 3."

Alex Garcia, Chicago Tribune

Cars litter a service road as "Transformers 3" filming continues next to the railway lines south of the Art Institute in Chicago. Above the movie set, pedestrians take in the view.

Alex Garcia, Chicago Tribune

The second day of filming on LaSalle Street for "Transformers 3" continues in downtown Chicago.

Alex Garcia, Chicago Tribune

Filming of Transformers 3 continues on East Wacker Drive in downtown Chicago.

William DeShazer, Chicago Tribune

Film crews prep the scenery for Transformers 3 on Michigan Avenue.

Alex Garcia, Chicago Tribune

Moviemaking takes over North Michigan Avenue next to Pioneer Court in downtown Chicago for the filming of "Transformers 3."

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley gets ready before filming a scene for Transformers 3 on Michigan Avenue.

William DeShazer, Chicago Tribune

Extras practice before filming "Transformers 3" on Michigan Avenue.

Alex Garcia, Chicago Tribune

Passersby try to get a look from the barricades on North Michigan Avenue during the filming of "Transformers 3."

Simon Brubaker, Chicago Tribune

More explosions were staged on the Wabash Avenue Bridge as part of the continued shooting of Transformers 3 in Chicago.

William DeShazer, Chicago Tribune

Fans scream for Shia LaBeouf as he walks back to Michigan Avenue for filming on the set of Transformers 3.

Simon Brubaker, Chicago Tribune

Shia Labeouf and Patrick Dempsey do a scene amid the rubble of the Transformers 3 set on Wacker Drive in downtown Chicago.

Chuck Berman, Chicago Tribune

Set props for the "Transformers 3" movie remain on LaSalle Street after the second day of shooting between Washington and Monroe Streets in downtown Chicago.

Alex Garcia, Chicago Tribune

Signs removed from North Michigan Avenue sit in Pioneer Court during the filming of "Transformers 3."

Alex Garcia, Chicago Tribune

Window washers watch as moviemaking takes over North Michigan Avenue next to Pioneer Court in downtown Chicago for the filming of "Transformers 3."

Simon Brubaker, Chicago Tribune

Actor Tyrese Gibson waves to fans on the set of Transformers 3 in Chicago.

Alex Garcia, Chicago Tribune

Actor Shia LaBeouf, on the set of "Transformers 3" is filmed within an upside-down car on a movie set on North Michigan Avenue next to Pioneer Court in downtown Chicago.

Chuck Berman, Chicago Tribune

Set props for the the filming of "Transformers 3" are visible on the second day of shooting along LaSalle Street in the Chicago Loop.

Alex Garcia, Chicago Tribune

Actors hang out along North Michigan Avenue next to Pioneer Court in downtown Chicago while they wait to called to duty during the filming of "Transformers 3/"

William DeShazer, Chicago Tribune

Base Jumpers make their way to upper Wacker Drive after jumping off the Trump Tower during filming "Transformers 3" on Saturday.

Brian Cassella, Chicago Tribune

A person passes through a crash scene at Washington and LaSalle Streets during the filming of "Transformers 3" in the Chicago Loop.

Alex Garcia, Chicago Tribune

Cars are stacked and strewn as movie-making takes over North Michigan Avenue next to Pioneer Court in downtown Chicago for the filming of "Transformers 3."

William DeShazer, Chicago Tribune

Crews with "Transformers 3" pack up their equipment outside of Bella Bacino's on East Wacker Drive in downtown Chicago.

Alex Garcia, Chicago Tribune

Filming of Transformers 3 continues on East Wacker Drive in downtown Chicago.

Chuck Berman, Chicago Tribune

A "Transformers 3" movie production assistant directs pedestrians away from the filming area at Clark and Monroe Streets in downtown Chicago.

Brian Cassella, Chicago Tribune

People pass through a crash scene at Washington and LaSalle Streets during the filming of "Transformers 3" in the Chicago Loop.

Mark Hume, Chicago Tribune

A simulated explosion creates a fireball at the north end of the Michigan Avenue Bridge during filming of "Transformers 3" in Chicago.

Simon Brubaker, Chicago Tribune

Shia Labeouf and Patrick Dempsey do a scene amid the rubble of the Transformers 3 set on Wacker Drive in Chicago.

Chuck Berman, Chicago Tribune

People gather at one of the barriers at Jackson Boulevard and Clark Street to get a glimpse or a photograph of the filming of the "Transformers 3" movie on LaSalle Street in downtown Chicago.

Mark Hume, Chicago Tribune

Small fires are created as production is underway at the north end of the Michigan Avenue Bridge during filming of "Transformers 3."

Chuck Berman, Chicago Tribune

Set props are moved on the second day of shooting along LaSalle Street in the Chicago Loop for the "Transformers 3" movie.

Alex Garcia, Chicago Tribune

Shia LaBeouf , left, and a stuntman doubling for him, walk on the East Wacker Drive set during practice for a maneuver as filming of the Transformers 3 movie continues on East Wacker Drive in downtown Chicago.

Abel Uribe, Chicago Tribune

Amanda Roter, 17, of Highland Park, is happy to pose with "Transformers 3" actor Josh Duhamel during a break in filming Pioneer Court off Michigan Avenue in Chicago.

William DeShazer, Chicago Tribune

Film crews prep the scenery for Transformers 3 on Michigan Avenue.

Mark Hume, Chicago Tribune

A simulated explosion creates a fireball at the north end of the Michigan Avenue Bridge during filming of Transformers 3.

Abel Uribe, Chicago Tribune

"Transformers 3" actor Josh Duhamel poses with fans during a break in filming Pioneer Court off Michigan Avenue. He spent about 20 minutes giving autographs.

William DeShazer, Chicago Tribune

The Optimus Prime truck is used during the filming of "Transformers 3" in downtown Chicago.

Luis Arroyave, Chicago Tribune

Optimus Prime rides along a downtown Chicago street during the filming of "Transformers 3."

William DeShazer, Chicago Tribune

People try to get a picture of the film helicopter involved in "Transformers 3" production in downtown Chicago.

Chuck Berman, Chicago Tribune

The "Transformers 3" movie extras gathering as filming continues on LaSalle Street in downtown Chicago.

William DeShazer, Chicago Tribune

Base Jumpers make their way to upper Wacker Drive after jumping off the Trump Tower during filming "Transformers 3."

Brian Cassella, Chicago Tribune

People pass through a crash scene at Washington and LaSalle Streets during the filming of "Transformers 3" along in the Chicago Loop.

Simon Brubaker, Chicago Tribune

Shia Labeouf and Patrick Dempsey do a scene amid the rubble of the Transformers 3 set on Wacker Drive in downtown Chicago.

William DeShazer, Chicago Tribune

Actors wait near by the set before filming a scene for Transformers 3 near the Michigan Avenue Bridge.

E. Jason Wambsgans, Chicago Tribune

Curious onlookers watch as crews create the set on a closed off portion of Michigan Avenue in Chicago in preparation for filming of "Transformers 3."

Chuck Berman, Chicago Tribune

Set props that transformed the look of LaSalle Street between Randolph Street and Jackson Boulevard are seen on the second day of shooting at the location for the "Transformers 3" movie.

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley gets ready before filming a scene for Transformers 3 on Michigan Avenue.

Simon Brubaker, Chicago Tribune

Patrick Dempsey's stunt double stands on the set of Transformers 3 as filming continues on Wacker Drive in downtown Chicago.

Luis Arroyave, Chicago Tribune

Bumblebee from "Transformers 3" travels down a Chicago street in the Loop.

Chuck Berman, Chicago Tribune

People pass by a sign at Clark and Monroe Street explaining the source of loud noises some might find disconcerting during the filming of "Transformers 3" in the Chicago Loop.

Simon Brubaker, Chicago Tribune

The Transformers 3 set in downtown Chicago.

William DeShazer, Chicago Tribune

Base Jumpers make their way to upper Wacker Drive after jumping off the Trump Tower during filming "Transformers 3."

Alex Garcia, Chicago Tribune

Pedestrians are escorted through a movie set at North Michigan Avenue next to Pioneer Court in downtown Chicago for the film "Transformers 3."

William DeShazer, Chicago Tribune

Filming for Transformers 3 takes place on the north side of the Michigan Avenue Bridge.

Alex Garcia, Chicago Tribune

A person pulling luggage strolls past the set of Transformers 3 on East Wacker Drive in downtown Chicago.

William DeShazer, Chicago Tribune

Crews with "Transformers 3" pack up their equipment outside of Bella Bacino's on East Wacker Drive in Chicago.

William DeShazer, Chicago Tribune

Film crews prep the scenery for Transformers 3 on Michigan Avenue.

Alex Garcia, Chicago Tribune

Fake debris is sprayed on the set of "Transformers 3" as moviemaking takes over North Michigan Avenue next to Pioneer Court in downtown Chicago.

E. Jason Wambsgans/Chicago Tribune photo

Crews close upper and lower Michigan Avenue and surrounding streets in preparation for filming of the third installment of "Transformers 3."

William DeShazer, Chicago Tribune

Film crews prep the scenery for Transformers 3 on Michigan Avenue.

Will DeShazer, Chicago Tribune

One of several base jumpers comes in for a landing along the Chicago River.

Simon Brubaker, Chicago Tribune

Actor Tyrese Gibson has make up applied while on the set of Transformers 3 in Chicago

Brian Cassella, Chicago Tribune

People pass through a crash scene at Washington and LaSalle Streets during the filming of "Transformers 3" along in the Chicago Loop.

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley and Shia LaBeouf prepare for a take before filming "Transformers 3" on Michigan Avenue.

Abel Uribe, Chicago Tribune

"Transformers 3" actor Josh Duhamel walks over to say hello to fans during a break in filming Pioneer Court off Michigan Avenue. He spent about 20 minutes giving autographs.

Will DeShazer, Chicago Tribune

Cars hang on the raised Michigan Avenue, bridge over the Chicago River.

Alex Garcia, Chicago Tribune

A stuntman doubling for Shia LaBeouf jumps cars during a practice maneuver on the set of Transformers 3, as filming continues on East Wacker Drive in downtown Chicago.

William DeShazer, Chicago Tribune

Shia LaBeouf (center) walks back to his trailer after filming a scene for "Transformers 3" on Michigan Avenue.

Alex Garcia, Chicago Tribune

Cars explode into the air during filming of Transformers 3 on East Wacker Drive in downtown Chicago.

Alex Garcia, Chicago Tribune

Actors Rosie Huntington-Whiteley, left, and Shia LaBeouf take off running during filming of "Transformers 3" on North Michigan Avenue at Pioneer Court in downtown Chicago.

Alex Garcia, Chicago Tribune

Vehicles for the Transformers 3 movie set, including a rescue truck that appears to be the character "Ratchet," are staged in front of the Chicago Tribune tower on North Michigan Avenue in Chicago.

Abel Uribe, Chicago Tribune

A sign on Michigan Avenue and Lake Street warns the public that Michigan Avenue will be closed from 7:00pm to 5:00am, in preparation for the filming of Transformers 3.

Alex Garcia, Chicago Tribune

Cars explode into the air during filming of Transformers 3 on East Wacker Drive in downtown Chicago.

Simon Brubaker, Chicago Tribune

More explosions were staged on the Wabash Avenue Bridge as part of the continued shooting of Transformers 3 in Chicago.

William DeShazer, Chicago Tribune

The Optimus Prime truck is used during the filming of "Transformers 3" on LaSalle Street in downtown Chicago.

Alex Garcia, Chicago Tribune

Set workers light fires for filming of a scene in Transformers 3 on East Wacker Drive in downtown Chicago.

Alex Garcia, Chicago Tribune

Moviemaking takes over North Michigan Avenue next to Pioneer Court in downtown Chicago for the filming of "Transformers 3."

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley and Shia LaBeouf film a scene for Transformers 3 on North Michigan Avenue in Chicago.

Alex Garcia, Chicago Tribune

Actor Shia LaBeouf joins the movie set at North Michigan Avenue next to Pioneer Court in downtown Chicago during the filming of "Transformers 3."

Alex Garcia, Chicago Tribune

A NASCAR-inspired transformer sits parked on East Wacker Drive for filming of the Transformers 3 movie in downtown Chicago.

Will DeShazer, Chicago Tribune

One of several base jumpers comes in for a landing along the Chicago River.

Alex Garcia, Chicago Tribune

Moviemaking takes over North Michigan Avenue next to Pioneer Court in downtown Chicago for the filming of "Transformers 3."

William DeShazer, Chicago Tribune

People try to get a picture of the film helicopter with "Transformers 3" as it hovers above the Chicago River.

Scott Strazzante, Chicago Tribune

"Transformers 3" filming continues on Wacker Drive between Wabash and State streets.

William DeShazer, Chicago Tribune

Rosie Huntington-Whiteley and Shia LaBeouf share a laugh before filming a scene for "Transformers 3" on Saturday.

Alex Garcia, Chicago Tribune

A stuntman doubling for Shia LaBeouf jumps cars during a rehearsal on the set of Transformers 3, as filming continues on East Wacker Drive in downtown Chicago.

Alex Garcia, Chicago Tribune

Pioneer Court in Chicago becomes a disaster area as one of the sets for "Transformers 3" takes shape on the Michigan Avenue bridge in downtown Chicago.

William DeShazer, Chicago Tribune

Shia LaBeouf walks around the set before filming "Transformers 3" on Michigan Avenue.

Will DeShazer, Chicago Tribune

One of several base jumpers comes in for a landing along the Chicago River,